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Perl-files

15 posts

Perl | File I/O Functions

Last Updated: 12 July 2025

File handling in Perl is used to read data from an external file or to write data into an external file. This is very useful as it provides a platform to permanently store...read more

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Display file contents based on line number

Last Updated: 28 August 2019

Write a Perl program to display contents of the file in sorted order(ascending) based on line numbers given via command-line arguments. Note that the line numbers can be i...read more

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Comparing content of files using Perl

Last Updated: 12 July 2025

In Perl, we can easily compare the content of two files by using the File::Compare module. This module provides a function called compare, which helps in comparing the con...read more

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Perl | Finding Files and Directories

Last Updated: 12 July 2025

For traversing a directory tree in Perl, there are several ways/methods. Traversing can be performed through function calls opendir and readdir which are a part of Perl pr...read more

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Perl | Useful File-handling functions

Last Updated: 12 July 2025

Perl was originally developed for the text processing like extracting the required information from a specified text file and for converting the text file into a different...read more

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Perl-File-Functions

Perl | Accessing a Directory using File Globbing

Last Updated: 12 July 2025

In Perl, a directory is used to store values in the form of lists. A directory is quite similar to a file. Just like a file, the directory also allows performing several o...read more

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Perl | Slurp Module

Last Updated: 17 February 2022

The File::Slurp module is used to read contents of a file and store it into a string. It is a simple and efficient way of Reading/Writing/Modifying complete files. Just li...read more

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Perl-File-Functions

Perl | tell() Function

Last Updated: 11 July 2025

tell() function in Perl is used to get the position of the read pointer in a File with the use of its FileHandle. If no FileHandle is passed then it returns the position w...read more

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Perl-File-Functions

Perl | getc Function

Last Updated: 11 July 2025

getc() function in Perl is used to read the next character from the file whose File Handle is passed to it as argument. If no FileHandle is passed then it takes one charac...read more

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Perl-File-Functions

Perl | Reading a CSV File

Last Updated: 11 July 2025

Perl was originally developed for the text processing like extracting the required information from a specified text file and for converting the text file into a different...read more

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Perl | Appending to a File

Last Updated: 05 March 2019

When a file is opened in write mode using “”, the content of the existing file is deleted and content added using the print statement is written to the file. In this mode,...read more

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Perl | Writing to a File

Last Updated: 07 March 2019

A filehandle is a variable that is used to read and write to a file. This filehandle gets associated with the file.In order to write to the file, it is opened in write mod...read more

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Perl | Creating Excel Files

Last Updated: 07 May 2019

Excel files are the most commonly used office application to communicate between computers. It is used to create rows and columns of text, numbers, and formulas for calcul...read more

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Perl | Opening and Reading a File

Last Updated: 26 February 2019

A filehandle is an internal Perl structure that associates a physical file with a name. All filehandles have read/write access, so once filehandle is attached to a file re...read more

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Perl | File Test Operators

Last Updated: 21 February 2019

File Test Operators in Perl are the logical operators which return True or False values. There are many operators in Perl that you can use to test various different aspect...read more

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